What this connector is
The Amphenol FCI 93939-116HLF is a 16-circuit dual-row male header in the BERGSTIK II series. It terminates via through-hole solder posts on a 0.100" (2.54 mm) pitch and mounts right-angle to the PCB, placing the mating face parallel to the board surface for horizontal board-to-board stacking or daisy-chain arrangements. All 16 positions are loaded. The housing is black and rated UL94 V-0.
How the ratings drive the choice
At 5 A per contact and 110 V, this header sits squarely in the signal and low-power board-to-board range — the current ceiling is driven by contact size and plating, not by thermal rise in the housing. The 30.0 µin (0.76 µm) gold thickness on the mating interface is a mid-grade gold plate that supports repeated mating cycles better than flash gold; the tin solder-post finish is the right choice for wave or hand-solder board assembly. The push-pull fastening type means the header relies on friction and housing geometry for retention — no screw lock — so it suits controlled-service internal board-to-board links rather than vibration-heavy harness runs. Contact material is phosphor bronze, which maintains conductivity and spring properties across the operating temperature envelope.
Where it is used
Board-to-board headers at 0.100" pitch are the workhorse of internal equipment interconnects — the 93939-116HLF serves that same role in the BERGSTIK II family. The right-angle orientation makes it suited for perpendicular board stacking or for bringing a connector row to a panel cut-out on a horizontal daughtercard. Unshrouded pins mean the header occupies the board footprint cleanly but offer no blind-mate guidance — alignment relies on the housing footprint and the matching receptacle. The 0.190" (4.83 mm) insulation height is the seated post protrusion above the board surface; the 0.120" (3.05 mm) post length and 0.160" (4.06 mm) mating length together define the engagement window for the receptacle contact beam.